A centre punch is a hand tool that is used to make a dimple in a workpiece, typically in order to provide a starting point for drilling a hole. They are commonly used in metalworking, woodworking, and other applications where a precise starting point is needed for drilling or cutting.
The most basic centre punch is a simple steel rod with a pointed tip. To use it, the tip is placed on the desired starting point and then struck with a hammer. The impact of the hammer causes the tip to deform the workpiece, creating a small dimple that can be used as a starting point for drilling or cutting.
Centre Punches are also commonly used in marking out, the process of transferring a measurement or layout from a rule or template to the workpiece. This can be done by using the point of the centre punch to make a small indentation in the surface of the workpiece, which can be used as a reference point for further measurements or layouts.
Overall, centre punches are a simple but extremely useful tool that can be found in almost any workshop. They can be used for a variety of tasks, from marking out to starting holes, and can be a valuable addition to any tool collection.
Arkham Tools offer a lovely set of 4 Centre Punches here.